What is the Latin word for reinforcement?

The usual Latin words for “reinforcement” are cōnfirmātiō, incrēmentum, supplēmentum; also auxilium, subsidium. The right choice depends on the sense; see the distinctions below.

English → Latin

“reinforcement” in Latin

cōnfirmātiōconfirmation, verification; corroboration; confirmation (sacrament)incrēmentumgrowth, development, increase, augmentation; increment supplēmentumreinforcements; supplies auxiliumhelp, aid, assistance, relief; antidote, remedy subsidiumhelp, support, aid, relief; reinforcement; reserve (troops)

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

reinforcement

Act of reinforcing, confirmatio; usually by the verb.

Fresh supply of troops, incrementum: supplementum; also, auxilia: subsidia (plur., Cic.). To send a reinforcement, mittere alicui subsidium, or milites subsidio mittere alicui: integros milites submittere defessis (in action).

Quick answer

What is the Latin word for reinforcement?: The usual Latin words for “reinforcement” are cōnfirmātiō, incrēmentum, supplēmentum; also auxilium, subsidium. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.